Unravel the Mystery: Can’t Solve This Crossword Clue?

The crossword clue “Its atomic number is this clue’s number divided by three is ARGON” suggests that the answer is a chemical element with an atomic number that can be derived from the number mentioned in the clue divided by three. In this case, the number of the clue is not mentioned, so we need to solve that first. The name of the element given in the clue “ARGON” is a noble gas and its atomic number is 18. So, we can deduce that the number in the clue is 3 times 18 which equals 54. Therefore, the answer to this crossword clue is XENON, another noble gas with an atomic number of 54.